Winding mechanism for tight winding paper tape on spools



Patented Apr. 3, 1951 WINDING MCHANISM FOR TIGHT WIND- ING PAPER TAPE NSPOOLS Walter J. Leveridge, Tuckahoe, N. Y., assignor to Bell yTelephoneLaboratories, Incorporated, New York, N. Y., a corporation of New YorkApplication December 24, 1947, Serial No. 793,587

4 Claims.

This invention relates to winding machines and more specically to amechanism for winding a paper ribbon or tape on a rotating spool.

In connection with the manufacture of a cer- .tain type of electricalcondenser for example, it is customary to apply a coat of metal directlyto one or both sides of a dielectric in the form of a ribbon or tape ofinsulating material to serve as the electrode for the condenser, themetal coating being applied to the dielectric in a vacuum chamber as thedielectric tape is transferred from a magazine spool to a receivingspool both also placed in the vacuum chamber.

In the transfer operation according to the method used previous to thisinvention it was not feasible to put the dielectric paper tape undersufficient tension so as to Wind the dielectric tight on the receivingspool without avoiding the breaking of the latter during the metallizingoperation with the result that a manual winding operation Was requiredfor the tightening of the dielectric on the receiving spool when removedfrom the vacuum chamber with the consequent tearing off or otherwisedamaging of a considerable length of the metal coated dielectric.

The object of the present invention is the provision of a simplemechanism whereby metalcoated insulating material in the form of aribbon or tape is wound uniformly tight on a receiving spool during themetallizing operation of the insulating material.

In thedrawing,

Fig. 1 is a side elevation shown with a number of operating parts withportions broken away; and

Fig. 2 is a front elevation view shown with the mechanism in positionfollowing the winding of a few turns of the metallized dielectric on thereceiving spool preparatory to the starting operation of its supportingmotor shaft.

According to the construction of the paper ribbon Winding machine ofthis invention a receiving spool I2 is keyed to one end of a motor shaftI0 which is supported at this end in a bearing Illy secured to amounting plate II. A shaft or pivot I4 is journaled at both ends inbearing portions I5 and I6 formed with a spacer bar Il, the bearingportion I5 being in the form of a disc secured to the mounting plate IIby a plurality of screws I8.

movement thereon in the manner of the flaps of 2 a hinge a pair ofduplex formed arms or supports I9 and 29 held in spaced relation attheir free ends by spacer members 2i and 22, respectively. A spindle 24is mounted for rotary movement on the duplex formed arms IS with one endof the shaft/projecting beyond one of the arms for securely receiving apinion 25 held in position thereon as by a nut 26 and on this shaft ismounted for rotary movement therewith a roller 2l. Similarly, on theduplex formed arms 20 is rotatably mounted a spindle 28 on which iskeyed a roller 29 of a diameter slightly greater than ythat of thediameter of roller 2l, while on the end of spindle 28 which projectsbeyond one of the duplex arms 20 is keyed a pinion 30 operativelyconnected to pinion 2'5 by a gear 3l mounted as on ball bearings 3'2tted on the projecting end of shaft I4 as shown in Fig. l.

A coiled spring having a left wound portion 33 and a right wound portion34 is tted over the periphery of a sleeve 35 on shaft I4 with one end ofeach iportion 33 and 34 bearing against the spacer bar of duplex formedarms I9, while the semiloop 40 formed by the adjacently disposed ends ofthe left and right wound portions of the spring abut against the spacerbar of duplex formed armsZ as best seen in Fig. 2

'so as to press their respective rollers 21 and 29 in contact withthemetallized paper ribbon on the receiving spool I2 While permitting themovement of the hinged arms I9 and 26 from the position shown in fullline to the position shown in dotted line in Fig. 2 during the pile-upof the paper ribbon on the receiving spool I 2.

In the operation of the metallized paper ribbon winding mechanism ofthis invention, the ribbon I3 from the magazine spool, not shown, iswound substantially 180 degrees around `the roller 21 with its endanchored on the receiving spool i2 on which it is Wound tightly a smallnumber of turns manually prior to the starting of the motor shaft I0.The operation of receiving spool I2 and the consequent movement of thepaper tape I3 and therefore the rotation of roller 21 is effective torotate the roller 29 through the intermediary gear 3|. Roller 29 becauseof its greater diameter and therefore its greater peripherall speed incontact with the paper on the receiving spool exerts a continuoustensioning effect on the succeeding convolutions of the paper to thecompletion of the winding operation when the rollers 2l and 29 reach theposition indicated in dotted line in Fig. 2 moving to that positionagainst the tension of spring elements 33-34 such movement beingeffected by the pile-up of the paper tape on the receiving spool asabove mentioned.

What is claimed is:

l. In a mechanism for Winding condenser die electric material in theform of a tape tightly ori a spool, said mechanism comprising a motorshaft, a`r'ec'eivispoolmounted for rdtationwith said shaft' a pivotmounted in parallelfand spaced relation to said motor shaft, a pair ofsupports hinged on said pivot, a pair of rollers of different f diametermounted for rotationfonrsaid-supports, resilient means tensioned against.-,saidl--sifpprts for urging said rollers in frictional contact withthe tape during the Windinglopiation therx'eo on said receiving spool tocausetl'rerlleroffthe large diameter to exert a continuous pullingaction on the tape to cause the'latt-erfto Windtight on said spool. y

2. In a mechanism for Winding a tapetightfon a receiving spool,said'lmechanism comprising a motor shaft for actuating rsaid receiving 1spool, 'a roller engaged an angular: distance of substantially half itscircumference bythe tap'e'priorto the `vvi'nding of the latter fon'saidspool,d another r'oller frictionally engaging the tape `von said spool,the last-mentioned roller having a-greater periph- Yeralspeed than thenist-'mentioned roller -forexerting 'a continuous pullingactiononthetapato causeY thev latterY to'wind 'tight onfsaid receiving`spool during the `operation oftheiattenbys'aid motor shaft, andafgearing'mechanism actuated by the movementof -thefirsternentionedroller y, connecting with the second-mentioned roller.

3. "In a mechanism for Winding condenserfdielectric material in the formofra tape--tightly on ra' spool, saidmechanismcomprisingva'mounting, :amotor shaft for actuating saidfspool-supported :at one end by saidmounting," aypivot, a support `secured to said mounting 'havingrbearingportions for receiving saidpvot, a pair of duplex for-med supportsvhinged. on said pivot, a drivingroller iss actuated by the movement ofthe tape mounted on one of said supports, a driven roller operativelyconnected to said driving roller mounted on the other of said supportsand operating at a greater peripheral speed than said driving roller,spring means tensioned against said supports for .urging said"rollersaganstthe tape during the Winding ofithe latter on said spool to causesaid .driven roller to exert a continuous frictional pull- Sing actionon the successive convolutions of the -tapejonsaid-spool.

ifi. AInfa-tape''Winding mechanism a motor operated shaft, a spool keyedon said shaft for re- 'ceivingfthe-tap'e; apair of independently movablef'supportsfaroller mounted on one of said sup- Eports engagedl bythetape a distance of substantiallyfhalffa turnoffits periphery prior toWinding on said receiving spool, another roller mounted onth'e'y otherof said supports having a greater periphery than the rSt-mentonedrollers fric- Vtionaily engagin'grthe tape wound on `said spool, Vmeansvactuated vby thel rst-mentioned roller'io'r actuatingthesecond-mentioned roller upon the -movementoi'the tape by the rotation.of said spoolv as eie'cted by. said motor shaft tocause thesecond-mentioned roller to vexert a continuous .pullingaction on thesucceeding convolutions fof the' tape during the Winding ofV thelatterlonisai'd lreceiving spool.

WALTER J. lLEVERIDGE.

' REFERENCES CITED The following references are vof record inthe 'fileof this'patent:

UNrrED,sTATiiis-l PATENTS Number Name Date iv,573,229 KAll'lti DSC.A15,-1896 `789,788 Bellamy 'May` 16,- 1905 798,241 L Warren Aug.29, v1905'I,'680,979 Gardner Allg. 14, 1928

